December 31, 1998:
Any member who desires to establish credit for part-time service before becoming a member must petition the board for such credit. Employees must have payroll evidence to support and verify that such member had prior public employment. For the purposes of computing partial or pro rata membership service, full time credit shall be considered by the board to be two hundred sixty (260) work days and seven and one half (7 ½) hours per day, or nineteen hundred and fifty (1950) hours per annum. Creditable service for part time employees who do not work a full year shall be prorated as it bears against full time service for that particular position.